US2187958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot box alarm
Assignee: NAT BEARING METALS CORP
•
Filing: 1939-02-18
•
Granted: 1940-01-23
•
Expires: 1959-02-18
Abstract
No abstract record available.
Inventors
- 👤 Vigne Albert
- 👤 Cox Isaac Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:02
CPC Classifications
B; B61; B61K; B61K9/00; B61K9/04; Y; Y10; Y10S; Y10S116/00; Y10S116/38
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1943-01-22 | 1943-07-24 | 1944-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-01-22 | 1947-07-24 | 1948-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-01-22 | 1951-07-24 | 1952-01-23 | $7700.00 | Window Closed / Lapsed |